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           ☆1 inequalities

[ 1/1Inequality]
    Assignment:Find the solution set of inequality －1 ≤2m＋3 ≤3－1 ≤m∧2 ≤3m∧2 <2m＋3 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 5 inequalities：
        -1 ≤2 * m + 3         (1)
        2 * m + 3 ≤3 - 1         (2)
        3 - 1 ≤ m ^ 2         (3)
         m ^ 2 ≤3 * m ^ 2         (4)
        3 * m ^ 2 <2 * m + 3         (5)

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    From inequality(1)：
         m ≥ -2
    From inequality(2)：
         m ≤ -1/2
    From inequality(3)：
         m ≤ -√2 或  m ≥ √2
    From inequality(4)：
         m ≤ 0 或  0 ≤ m ≤ 0 或  m ≥ 0
    From inequality(5)：
         -0.720759 < m < 1.387426

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    From inequalities (1) and (2)
         -2 ≤ m ≤ -1/2    (6)
    From inequalities (3) and (6)
         -2 ≤ m ≤ -√2    (7)
    From inequalities (4) and (7)
         -2 ≤ m ≤ -√2    (8)
    From inequalities (5) and (8)
         m ≤     (9)

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    The final solution set is :
         m ≤

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